<template>
  <!-- 解决商品价格闪烁的问题 -->
  <view v-if="goods_info.goods_name">
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item, i) in goods_info.pics" :key="i" @click="preview(i)">
        <image :src="item.pics_big || defaultPic"></image>
      </swiper-item>
    </swiper>
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">￥{{goods_info.goods_price}}</view>
      <!-- 信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名称 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">快递：免运费 -- {{cart.length}}</view>
    </view>
    <!-- 下面这个标签里面可能有些图片获取不到导致报错，所以先注释一下 -->
    <!-- <rich-text :nodes="goods_info.goods_introduce"></rich-text> -->
    <view class="goods_nav">
      <!-- fill 控制右侧按钮的样式 -->
      <!-- options 左侧按钮的配置项 -->
      <!-- buttonGroup 右侧按钮的配置项 -->
      <!-- click 左侧按钮的点击事件处理函数 -->
      <!-- buttonClick 右侧按钮的点击事件处理函数 -->
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick" @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import { mapState } from 'vuex'
  import { mapMutations } from 'vuex'
  import { mapGetters } from 'vuex'
  export default {
    data() {
      return {
        goods_info: {},
        defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png',
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: 'cart',
          info: 2
          
          // text: 'cart',
          // 不知道为什么下面就是不行，难道是因为字数多了，然后内容被挤出去了吗
          // 不对不对，我写更长的字都行，这里加了个空格又行了
        }],
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]

      }
    },
    computed:{
      ...mapState('m_cart',['cart']),
      ...mapGetters('m_cart', ['total'])
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      async getGoodsDetail(goods_id) {
        const {
          data: res
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        if (res.meta.status != 200) return uni.$showMsg()
        // 解决 .webp 格式图片在 ios 设备上无法正常显示的问题：
        res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ')
          .replace(/webp/g, 'jpg')
        this.goods_info = res.message
      },
      preview(i) {
        uni.previewImage({
          current: i,
          urls: this.goods_info.pics.map(x => w.pics_big)
        })
      },
      onClick(e) {
        if (e.content.text === 'cart') {
          // 切换到购物车页面
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      ...mapMutations('m_cart', ['addToCart']),
      buttonClick(e){
        // console.log(this.goods_info)
        if(e.content.text==="加入购物车"){
          const goods={
            goods_id:this.goods_info.goods_id,
            goods_name:this.goods_info.goods_name,
            goods_price:this.goods_info.goods_price,
            goods_count:1,
            goods_small_logo:this.goods_info.goods_small_logo,
            goods_state:true
          }
          this.addToCart(goods)
        }
      },
       
    },
    watch:{
      total:{
        handler(newVal){
          const findResult = this.options.find((x) => x.text === 'cart')
          if(findResult){
            findResult.info=newVal
          }
          // console.log("new",newVal)
        },
        immediate:true
      }
    }
  }
</script>

<style>
  swiper {
    height: 750rpx;
  }

  image {
    width: 100%;
    height: 100%;
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;
  }

  .price {
    color: #c00000;
    font-size: 18px;
    margin: 10px 0;
  }

  .goods-info-body {
    display: flex;
    justify-content: space-between;
  }

  .goods-name {
    font-size: 13px;
    padding-right: 10px;
  }

  .favi {
    width: 120px;
    font-size: 12px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-left: 1px solid #efefef;
    color: gray;
  }

  .yf {
    margin: 10px 0;
    font-size: 12px;
    color: gray;
  }
  .goods-detail-container {
    // 给页面外层的容器，添加 50px 的内padding，
    // 防止页面内容被底部的商品导航组件遮盖
    padding-bottom: 50px;
  }
  .goods_nav {
    // 为商品导航组件添加固定定位
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
  }
  
</style>
